Question

Q5. The temperature cat in noon was loc
above zero
If it decreases at
the rate of 2°c per aher until
midnight, as unhat time would
the emperature be 8°c below
zero ? What would be the temper-
-ature at mid night?​

Answer 1

Answer:

1)Time at which the temperature be 8°c below

zero = 9pm or 21 00 hrs.

2)Temperature at midnight= -14 degrees.

Step-by-step explanation:

If the question is this:

Q5. The temperature at noon was l0°c

above zero.

If it decreases at

the rate of 2°c per hour until

midnight.

(a) At what time would

the temperature be 8°c below

zero ?

(b) What would be the temperature at midnight?​

Given:

Noon means 12 00

Every hour the temp decreases by 2°c.

What we know:

There are 12 hrs between noon and midnight.

so, no. of hrs*no. temp decreased every hour.

∴12*2=24 degrees celcius being decresed in 12 hours.

(a)

10-2-2-2-2-2-2-2-2-2=-8

no of -2's = the no. of hrs. The temp given started at noon so 12 00.

there are 9 -2's so 9 hrs. 12 00+ 9hrs = 21 00hrs or 9pm.

(b)Temperature at midnight = 12 hrs*2 degrees= 24 degrees.

so 10-24= -14 degrees.

∴Temperature at midnight= -14 degrees.

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